In January 2009, as part of an industrial test to the OJSC «MykolayivCement» was shipped pilot batch grinding balls with increased hardness LLC «Plant «Energosteel» production. Ball downloading 1 st camera test mill was 34 tons.

March 26, 2009 in the presence of specialists CJSC «Energoprogress» was planned interim checking of cement mills. The audit found uniform wear test grinding balls. At the time of the stop cement mill worked 260 hours. According to the results of the examination is photos.